1. An oil fume purification system, comprising:

a smoke tube main body (1) for discharging smoke; and the number of the first and second groups,

the plasma generating device (2) is connected to one end of the smoke tube main body (1), the plasma generating device (2) is communicated with the smoke tube main body (1), the plasma generating device (2) comprises an annular cavity (21), electrodes (26) distributed in a spiral shape are arranged in the annular cavity (21), and plasmas released in the annular cavity (21) are contacted with oil smoke in the smoke tube main body (1).

2. The lampblack purification system as claimed in claim 1, characterized in that said annular chamber (21) comprises:

an inner ring (22) having a first annular inner wall (221), the first annular inner wall (221) for mounting either one of an anode (24) and a cathode (25); and the number of the first and second groups,

an outer ring (23) having a second annular inner wall (231) disposed coaxially with the first annular inner wall (221), the second annular inner wall (231) being for mounting the other of the anode (24) and the cathode (25);

wherein the annular cavity (21) is formed between the inner ring (22) and the outer ring (23), and the electrode (26) is spirally connected between the cathode (25) and the anode (24).

3. The lampblack purification system according to claim 1, characterized in that it further comprises a check valve (3), said plasma generation means (2) being connected between said flue body (1) and said check valve (3).

4. The lampblack purification system according to claim 3, characterized in that the inner diameter of the plasma generation device (2) is the same as the inner diameter of the air outlet of the check valve (3).

5. The fume purification system according to claim 3, characterized in that said plasma generation means (2) and said check valve (3) are made of glass or ceramic.

6. The lampblack purification system according to claim 1, characterized in that the diameter of the electrode (26) is d, the pitch of the electrode (26) is s, the difference between the inner and outer diameter of the annular chamber (21) is h, wherein s is 2d ≦ 4d, and h is 1.5s ≦ 3 s.

7. The lampblack purification system according to claim 1, characterized in that said electrodes (26) have a diameter d, wherein 0.5mm < d < 1.3 mm.

8. The lampblack purification system according to claim 1, characterized in that the pitch of the electrodes (26) is s, where s is 4 mm.

9. The lampblack purification system according to claim 1, characterized in that the difference between the inner and outer diameter of the annular cavity (21) is h, wherein h is greater than or equal to 8 mm.

10. The lampblack purification system according to claim 2, further comprising a power supply device, wherein the power supply device is respectively connected with the cathode (25) and the anode (24) through external leads (28).

11. The fume purification system according to claim 5, characterized in that both end faces of said annular chamber (21) are sealed.

12. The lampblack purification system according to claim 5, characterized in that the vertical distance between the two end faces of the annular cavity (21) is H, wherein H is greater than or equal to 50mm and less than or equal to 150 mm.

13. The lampblack purification system according to claim 1, characterized in that an insulating medium (27) is introduced into the annular cavity (21), wherein the insulating medium (27) is an insulating gas or an insulating liquid.

14. The fume purification system according to claim 2, characterized in that said first annular inner wall (221) has a communication portion which can be controllably opened and closed, said communication portion being adapted to communicate the plasma in said annular chamber (21) with the fume in said flue tube body (1).

15. A range hood comprising a body and a fume purification system as claimed in any one of claims 1 to 14, said body being connected to an end of said main body (1) of said flue tube facing away from said plasma generating device (2).

Background

The oil fume generated in the cooking process contains many toxic and carcinogenic substances, which can seriously affect the health of people, so that the treatment of the oil fume is more and more paid attention by many people. The traditional mode of simply exhausting indoor oil smoke to the outdoor cannot meet the pursuit of people for high-quality life, and oil smoke treatment and purification technology is urgently needed to purify oil smoke, reduce the pollution of the oil smoke to the environment and reduce the influence on human health.

Lampblack is smoke that is gradually produced by edible oil and food under high temperature heating during cooking. The composition of the oil smoke is very complex, mainly comprises volatile oil, alkane, aldehyde, alcohol ester, aromatic compound and the like, and contains more than 200-300 pollutants. Meanwhile, the oil smoke also contains a plurality of toxic chemical components, such as polycyclic aromatic hydrocarbon. The oil smoke not only affects the living environment and the body health of people, but also has great pollution to the environment. The oil smoke is discharged outdoors and can be attached to buildings and other objects, which affects the beauty of the objects. In addition, harmful gases such as short-chain aldehydes, ketones, acids, alcohols and the like contained in the oil smoke are discharged to the outdoor, so that haze is generated, and symptoms such as inappetence, lethargy, listlessness and the like can be generated when people stay in the haze environment for a long time, so that the health of human bodies is seriously influenced.

The plasma contains oxidation active particles (such as OH, O3 and the like), the particles have high oxidation potential and high reaction rate, can oxidize part of grease compounds in the oil smoke, and has obvious improvement effect on the emission of carcinogenic substances in the smoke. In the related art, the electrodes of the plasma generating device are arranged along the axial direction, and the obtained axial magnetic field has weak capability, so that the plasma diffusing to the periphery cannot be restrained, and the purifying effect is not ideal.

Disclosure of Invention

In order to solve the technical problem that the plasma generating device in the related art obtains the weaker ability of the axial magnetic field, the application provides an oil smoke purification system and a range hood.

In a first aspect, the present application provides a lampblack purification system, comprising:

a smoke pipe main body for discharging oil smoke; and the number of the first and second groups,

the plasma generating device is connected to one end of the smoke tube main body and communicated with the smoke tube main body, the plasma generating device comprises an annular cavity, electrodes distributed spirally are arranged in the annular cavity, and plasma released in the annular cavity is contacted with oil smoke in the smoke tube main body.

In one embodiment of the present application, the ring cavity comprises:

an inner ring having a first annular inner wall for mounting either one of an anode and a cathode; and the number of the first and second groups,

an outer ring having a second annular inner wall disposed coaxially with the first annular inner wall, the second annular inner wall for mounting the other of the anode and the cathode;

wherein, the annular cavity is formed between the inner ring and the outer ring, and the electrode is spirally connected between the cathode and the anode.

In one embodiment of the present application, the plasma generator further comprises a check valve, and the plasma generator is connected between the smoke tube main body and the check valve.

In one embodiment of the present application, the inner diameter of the plasma generating device is the same as the inner diameter of the air outlet of the check valve.

In one embodiment of the present application, the plasma generation device and the check valve are made of glass or ceramic.

In one embodiment of the present application, the diameter of the electrode is d, the pitch of the electrode is s, and the difference between the inner diameter and the outer diameter of the annular cavity is h, wherein s is greater than or equal to 2d and less than or equal to 4d, and h is greater than or equal to 1.5s and less than or equal to 3 s.

In one embodiment of the application, the diameter of the electrode is d, wherein d is more than 0.5mm and less than 1.3 mm.

In one embodiment of the present application, the pitch of the electrode is s, where s is 4 mm.

In one embodiment of the present application, the difference between the inner diameter and the outer diameter of the annular cavity is h, wherein h is greater than or equal to 8 mm.

In an embodiment of the present application, the power supply device further includes a power supply device, and the power supply device is respectively connected to the cathode and the anode through external wires.

In one embodiment of the present application, the power supply device is an ac power supply, and the voltage of the ac power supply is 4-6kV and the frequency is 18-22 kHz.

In one embodiment of the present application, both end faces of the annular cavity are sealed.

In one embodiment of the present application, a vertical distance between two end faces of the annular cavity is H, wherein H is greater than or equal to 50mm and less than or equal to 150 mm.

In an embodiment of the present application, an insulating medium is introduced into the annular cavity, and the insulating medium is an insulating gas or an insulating liquid.

In an embodiment of the application, first annular inner wall has the intercommunication portion, the opening and shutting that the intercommunication portion can be controlled, the intercommunication portion be used for the plasma in the intercommunication annular chamber with the oil smoke in the tobacco pipe main part.

In a second aspect, the present application provides a range hood, which includes a body and the oil smoke purification system of any one of the embodiments of the first aspect, wherein the body is connected to one end of the smoke tube main body deviating from the plasma generation device.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:

on the one hand, the oil smoke clean system that this application embodiment provided, the defect of prior art has been improved, the plasma generating device of this application can produce a large amount of plasmas in the ring chamber after the circular telegram work, and because the discharge current that flows through the heliciform electrode can obtain great axial magnetic field in heliciform electrode inside, retrain the plasma to diffusion all around effectively, axial plasma number density has been increased, thereby more plasmas contact with the oil smoke, this promotion that makes the purifying effect of oil smoke very big.

On the other hand, the range hood that this application embodiment provided, organism can produce a large amount of oil smoke in the operation, discharges through the tobacco pipe main part, before the discharge, installs plasma generating device additional, can effectively reduce the poisonous or carcinogenic substance content of range hood emission in to the air, can play purifying effect.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a perspective view of an oil smoke purifying system provided in an embodiment of the present application;

fig. 2 is a plan view of a first viewing angle of the lampblack purification system provided by the embodiment of the application;

fig. 3 is a plan view of a second viewing angle of the lampblack purification system provided by the embodiment of the application;

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

fig. 5 is a plan view of a third viewing angle of the lampblack purification system provided by the embodiment of the application;

fig. 6 is a sectional view taken along line B-B of fig. 5.

Reference numerals:

1. a smoke pipe main machine; 2. a plasma generating device; 21. an annular cavity; 22. an inner ring; 221. a first annular inner wall; 23. an outer ring; 231. a second annular outer wall; 24. an anode; 25. a cathode; 26. an electrode; 27. an insulating medium; 28. connecting a lead externally; 3. a check valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The oil fume generated in the cooking process contains many toxic and carcinogenic substances, which can seriously affect the health of people, so that the treatment of the oil fume is more and more paid attention by many people. The traditional mode of simply exhausting indoor oil smoke to the outdoor cannot meet the pursuit of people for high-quality life, and oil smoke treatment and purification technology is urgently needed to purify oil smoke, reduce the pollution of the oil smoke to the environment and reduce the influence on human health.

Lampblack is smoke that is gradually produced by edible oil and food under high temperature heating during cooking. The composition of the oil smoke is very complex, mainly comprises volatile oil, alkane, aldehyde, alcohol ester, aromatic compound and the like, and contains more than 200-300 pollutants. Meanwhile, the oil smoke also contains a plurality of toxic chemical components, such as polycyclic aromatic hydrocarbon. The oil smoke not only affects the living environment and the body health of people, but also has great pollution to the environment. The oil smoke is discharged outdoors and can be attached to buildings and other objects, which affects the beauty of the objects. In addition, harmful gases such as short-chain aldehydes, ketones, acids, alcohols and the like contained in the oil smoke are discharged to the outdoor, so that haze is generated, and symptoms such as inappetence, lethargy, listlessness and the like can be generated when people stay in the haze environment for a long time, so that the health of human bodies is seriously influenced.

The plasma contains oxidation active particles (such as OH, O3 and the like), the particles have high oxidation potential and high reaction rate, can oxidize part of grease compounds in the oil smoke, and has obvious improvement effect on the emission of carcinogenic substances in the smoke. In the related art, the electrodes of the plasma generating device are arranged along the axial direction, and the obtained axial magnetic field has weak capability, so that the plasma diffusing to the periphery cannot be restrained, and the purifying effect is not ideal.

In order to solve the technical problem that plasma generating device obtains the weaker technical problem of axial magnetic field ability in the correlation technique, the application provides an oil smoke clean system, includes: a smoke pipe main body for discharging oil smoke; and the plasma generating device is connected to one end of the smoke pipe main body and is communicated with the smoke pipe main body, the plasma generating device comprises an annular cavity, electrodes distributed spirally are arranged in the annular cavity, and the plasma released in the annular cavity is contacted with the oil smoke in the smoke pipe main body.

It is understood by those skilled in the art that the annular cavity needs to be filled with an insulating medium, which may be an insulating liquid or an insulating gas, wherein the insulating liquid may be silicone oil, and the silicone compound has a characteristic of, for example, UCC ucal PA-1 silicone compound, a density of 1.O18g/cm, and a kinematic viscosity of 1.2 × 10. ni/s, a brown liquid, readily soluble in alcohols, aromatic hydrocarbons and halogenated hydrocarbons, which are liquid. The insulating gas can be sulfur hexafluoride, and the sulfur hexafluoride has excellent insulating property. The insulating strength of the gas is 2.4 times higher than that of air and is about 30% lower than that of transformer oil under normal pressure; when the air pressure is increased to 0.65 meter atmospheric pressure, the insulation strength of the transformer oil is equal to that of the transformer oil; when the air pressure is increased to 1.25 gauge, the insulation strength of the transformer oil is about 15% higher than that of the transformer oil, so in a high-voltage electric appliance, sulfur hexafluoride is used as an insulation medium, the size of an insulation gap can be reduced, and the volume of the electric appliance can be reduced.

For a more particular understanding of the technical idea of the present application, exemplary embodiments are described below with reference to the accompanying drawings:

as shown in fig. 1-6, the present application provides a lampblack purification system, which comprises a smoke tube body 1 for discharging lampblack; and the plasma generating device 2 is connected to one end of the smoke tube main body 1, the plasma generating device 2 is communicated with the smoke tube main body 1, the plasma generating device 2 comprises an annular cavity 21, electrodes 26 distributed spirally are arranged in the annular cavity 21, and plasma released in the annular cavity 21 is contacted with the oil smoke in the smoke tube main body 1. Wherein, the smoke tube main body 1 and the plasma generating device 2 are coaxially arranged, and the internal channel of the smoke tube main body 1 is communicated with the internal channel of the annular cavity 21.

The oil smoke clean system that this application embodiment provided, the defect of prior art has been improved, plasma generating device 2 of this application can produce a large amount of plasmas in annular chamber 21 after the circular telegram work, and because the discharge current that flows through heliciform electrode 26 can obtain great axial magnetic field in heliciform electrode 26 inside, plasma to diffusion all around has been retrained effectively, axial plasma number density has been increased, thereby more plasmas contact with the oil smoke, this makes the very big promotion of purifying effect of oil smoke.

For the annular cavity 21, said annular cavity 21 comprises: an inner ring 22 having a first annular inner wall 221, the first annular inner wall 221 being for mounting either one of the anode 24 and the cathode 25; and an outer ring 23 having a second annular inner wall 231 disposed coaxially with the first annular inner wall 221, the second annular inner wall 231 for mounting the other of the anode 24 and the cathode 25; wherein, the annular cavity 21 is formed between the inner ring 22 and the outer ring 23, and the electrode 26 is spirally connected between the cathode 25 and the anode 24.

In some embodiments, the plasma generator 2 is connected between the smoke tube body 1 and the check valve 3. Through install the plasma generating device 2 that the heliciform discharges additional behind check valve 3, can effectively reduce the poisonous or carcinogenic substance content of range hood emission in to the air, and this structure need not to reform transform the range hood again, directly on the basis of current cigarette machine add install can, easily the operation additional.

Further, in order to avoid the influence of steps on the air outlet performance caused by the air outlet pipe wall of the check valve 3, the inner diameter of the plasma generating device 2 is the same as that of the air outlet of the check valve 3, so that the air outlet is smooth, and the air outlet efficiency is improved.

In some embodiments, the plasma generating device 2 and the check valve 3 are made of the same material, and in particular, the plasma generating device 2 and the check valve 3 are made of glass or ceramic, which is helpful for the stable operation of the electrode 26.

In some embodiments, the diameter of the electrode 26 is d, the pitch of the electrode 26 is s, and the difference between the inner diameter and the outer diameter of the annular cavity 21 is h, wherein s is greater than or equal to 2d and less than or equal to 4d, and h is greater than or equal to 1.5s and less than or equal to 3 s. The diameter of the electrode 26 is d, wherein d is more than 0.5mm and less than 1.3 mm. Specifically, the diameter of the electrode 26 is 1 mm. The pitch of the electrode 26 is s, where s is 4 mm. The difference between the inner diameter and the outer diameter of the annular cavity 21 is h, wherein h is more than or equal to 8 mm. The diameter d of the electrode 26 is 0.5-1.3mm and the pitch s is at least 2 times but not more than 4 times the diameter d, the shortest distance between the cathode 25 and the anode 24 (i.e. the difference h between the inner and outer diameter of the annular chamber 21) being 1.5-3 times the pitch s.

For the power supply mode of the cathode 25 and the anode 24, the power supply device is further included, and the power supply device is respectively connected with the cathode 25 and the anode 24 through an external lead 28. The power supply device is an alternating current power supply, the voltage of the alternating current power supply is 4-6kV, the frequency of the alternating current power supply is 18-22kHz, and the alternating current power supply can be obtained by processing an alternating current power supply of the range hood through a transformer. Specifically, the power supply is an alternating current power supply with the voltage of 5kV and the frequency of 20 kHz.

In some embodiments, both end faces of the annular cavity 21 are sealed. Specifically, the vertical distance between two end faces of the annular cavity 21 is H, wherein H is not less than 50mm and not more than 150 mm. Preferably, the vertical distance H between the two end faces of the annular chamber 21 is 100 mm.

In some embodiments, the first annular inner wall 221 has a communication portion that can be controllably opened and closed, and the communication portion is used for communicating plasma in the annular cavity 21 and soot in the smoke tube main body 1. Specifically, the communicating part may be a plurality of communicating holes which can be controlled to open and close, when a large amount of plasma is generated in the internal channel of the plasma generating device 2, all the communicating holes are closed, and when a large amount of plasma waits to be released, the communicating holes are opened to contact the oil smoke with the plasma, thereby performing a purifying function. Furthermore, the opening and closing of the communication holes can be controlled by a control device, a plurality of communication holes are uniformly distributed on the first annular inner wall 221, a cover body is rotatably connected to each communication hole, each cover body and each communication hole are rotatably opened and closed through a rotating shaft, each rotating shaft is respectively connected with a micro-control motor, and each micro-control motor is controlled to start or stop through the control device. Therefore, the annular cavity 21 can be sealed when plasma is generated, the insulating medium 27 is prevented from overflowing, and after the plasma is generated, the communicating holes are opened, so that the plasma is contacted with the oil smoke, and the purifying effect is achieved.

In a second aspect, the present application provides a range hood, which includes a body and the oil smoke purification system of any one of the embodiments of the first aspect, wherein the body is connected to one end of the smoke tube main body 1 deviating from the plasma generation device 2. The organism can produce a large amount of oil fumes in the operation, discharges through tobacco pipe main part 1, before discharging, installs plasma generating device 2 additional, can effectively reduce the range hood to the poisonous or carcinogenic substance content of discharging in the air, can play purifying effect.

This embodiment is when using, and range hood opens the back, and the user can select whether to open plasma generating device 2, if the user selection opens the device, then the device starts the operation and purifies the lampblack absorber flue gas. The plasma generating device 2 mainly comprises 5 parts, a first annular inner wall 221, a second annular inner wall 231, an anode 24, a cathode 25 and silicone oil (insulating medium 27), wherein the anode 24 is installed at a position of the annular cavity 21 close to the first annular inner wall 221, the cathode 25 is installed at a position of the annular cavity 21 close to the second annular inner wall 231, the annular cavity 21 is filled with the insulating medium 27 silicone oil, and two end faces of the annular cavity 21 are subjected to sealing treatment. The anode 24 and the cathode 25 are both provided with external leads 28 connected to the plasma generating device 2, and can be connected to a power supply of the plasma generating device 2 through the external leads 28. The power supply is an alternating current power supply with the voltage of 5kV and the frequency of 20kHz, and can be obtained by processing an external power supply of the range hood through a transformer. The installation position of the plasma generating device 2 is between the check valve 3 and the smoke tube main body 1 of the range hood, and the inner diameter of the plasma generating device 2 is the same as the inner diameter of the air outlet of the check valve 3, so that the influence of the step on the air outlet performance of the air outlet tube wall is avoided. The vertical distance between the two end faces of the annular cavity 21 of the plasma generating device 2 is 100mm, and the material of the plasma generating device 2 is made of glass or ceramic, which is beneficial to the stable operation of the electrode 26; the electrode 26 is made of copper or lead and has a cylindrical configuration with a diameter d of 1mm, and is placed between the first and second annular inner walls 221 and 231 in a cylindrical spiral with a pitch s of 4mm and a shortest distance between the cathode 25 and the anode 24 of 8 mm. After the plasma generating device 2 is electrified to work, plasma can be generated in the air flow, and a large axial magnetic field can be obtained in the spiral electrode 26 due to the discharge current flowing through the spiral electrode 26, so that the plasma diffusing around is effectively restrained, the number density of the axial plasma is increased, and the purifying effect is greatly improved.

It is noted that in the description and claims of the present application and in the above-mentioned drawings, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Also, the terms "comprises," "comprising," and "having," as well as any variations thereof or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications and changes to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.